Castle humidifier



FIG. 1 is a top, front, and right side perspective of an embodiment of a castle humidifier embodying my new design.

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 left side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof. 

The ornamental design for a castle humidifier, as shown. 